identify.c

多用户银行系统

#include "../include/structs.h"
#include "../include/error.h"
#include "../include/stddef.h"
#include <stdio.h>
#include <string.h>
#include <stddef.h>

int identify(USER *user)
{
	USER usr;
	FILE *fp;
	if((fp = fopen("../pwdfile", "r")) == -1)
	{
		printf("open error.\n");
		exit(0);
	}
	while(1)
	{
		if(fread(&usr, sizeof(USER), 1, fp) != 0)
		{
			if(strcmp(usr.name, user->name) ==0 )
			{
				if(strcmp(usr.pwd, user->pwd) == 0)
				{
					return OK;
				}
				else
				{ 	
					return EPWD;
				}
			}
			else	
			{			
				continue;
			}
		}
		return ENAME;
	}
}